Commands by hayward (0)

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Set RGB gamma of secondary monitor
This command first determines whether a second screen is connected. If this is the case, it sets the screen's RGB gamma via xrandr. Useful for cheap or slightly defective monitors with a tint. In this example a yellowing/champagne color deviation is compensated for by decreasing the red and the green portion of the image.

split and combine different pages from different pdf's
The command shows the real power of the pdftk tool, you can do basically everything you want with multiple pdf's. In the command a book is created from chapters, headings and covers.

memcache affinity: queries local memcached for stats, calculates hit/get ratio and prints it out.
queries local memcached for stats, calculates hit/get ratio and prints it out.

Human readable directory sizes for current directory, sorted descending

Bypass 1000 Entry limit of Active Directory with ldapsearch
That command bypass the entry limit specifing page results size, when the search arrive to the limit ldapsearch magically reiterate it from the last entry.

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

list block devices
Shows all block devices in a tree with descruptions of what they are.

Watch active calls on an Asterisk PBX
Only the number of calls nothing else.

Find files and calculate size of result in shell
Find files and calculate size with stat of result in shell

floating point operations in shell scripts
using bc is for sissies. dc is much better :-D Polish notation will rule the world...

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